The Sanyo RD-401 is a cassette tape deck manufactured between 1979 and 1981 in Japan. It features a silver or black exterior and is designed for home audio use. The device operates without remote control and has a power consumption of 20 W. Its dimensions are 400 mm in width, 155 mm in height, and 290 mm in depth, with a weight of 4.9 kg. The RD-401 includes a combination audio head for recording and playback as well as a ferrite erase head. It operates at a tape speed of 4.75 cm/s with synchronization fluctuations of 0.12. Users can play back and record on Type I and Type II cassette tapes, providing frequency responses of 30 Hz - 14 kHz for Type I and 30 Hz - 17 kHz for Type II. Distortion is kept to a minimum with a factor of 1.5. The signal-to-noise ratio is substantial, reaching 54 dB without Dolby and 64 dB with Dolby. The device also supports crosstalk attenuation and features a rewind time of 90 seconds for a C-60 cassette. The RD-401 offers several connectivity options, including two microphone inputs at the front, line in and out, as well as outputs for headphones.
